Self-magnetic field accelerated ultra-high enthalpy arc heater

An arc heater, ultra-high technology, applied in the direction of discharge heating, electric heating devices, electrical components, etc., can solve problems such as failure to provide, and achieve the effect of prolonging the test time

Active Publication Date: 2014-07-23
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pneumatic heating and radiation heating, the enthalpy of the surrounding environment will reach 56MJ / kg, the previous heaters could not provide such a high enthalpy

Method used

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  • Self-magnetic field accelerated ultra-high enthalpy arc heater
  • Self-magnetic field accelerated ultra-high enthalpy arc heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown in Figure 1, the self-accelerated ultra-high enthalpy arc heater is composed of a cathode 1, a nozzle 2, and an anode 3. Each part

Insulate and seal each other.

[0013] The cathode 1 is composed of a cathode rod 4 and a high-temperature-resistant insulating sleeve 5. The working gas passes downstream of the cathode rod 4

The air inlet 6 rotates tangentially to enter. The cathode rod 4 is made of a tungsten alloy with high temperature resistance and low electron overflow work. Cathode 1

It is insulated from nozzle 2 and sealed and fixed.

[0014] The nozzle 2 is composed of a number of water-cooled metal rings 7 and insulating sheets 8 arranged alternately. Water-cooled metal ring 7 and

The number and size of the insulating sheets 8 can be adjusted according to the requirements of the simulation parameters. Each water-cooled metal ring 7 has water-cooled

Road 9. The air inlet 10 downstream of the compression channel can introduce gas of the composition requi...

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Abstract

A self-magnetic field accelerated ultra-high enthalpy arc heater, including: a cathode, a nozzle and an anode, the cathode and the anode are separated by a supersonic nozzle, the cathode is placed upstream of the supersonic nozzle, 6-30 anode terminals along the The circumferential direction is evenly placed at the outlet of the supersonic nozzle, and the supersonic nozzle is composed of 5-10 mutually insulated metal rings. The upstream end of the plasma arc is attached to the cathode terminal, and the downstream end is evenly distributed on the anode terminal. Using high current and low voltage operation mode, the high current of the arc itself generates a strong magnetic field, which compresses the arc to the central area and accelerates the plasma. The structure of the supersonic nozzle makes the air flow disturbed upstream. These reasons make the air flow and arc fully Mixing increases airflow enthalpy. The self-magnetic field accelerated ultra-high enthalpy arc heater can be applied to simulate the high-altitude thermal environment of the aerospace vehicle when it returns from deep space exploration, and provide a thermal environment for the screening experiment of the thermal-proof material of the aerospace vehicle.

Description

Self-magnetic field acceleration ultra-high enthalpy arc heater technology field [0001] A self-magnetic field accelerated ultra-high enthalpy arc heater for aerodynamic thermal ground simulation experiment. Background technique [0002] When the spacecraft reenters the atmosphere, its surface will experience severe aerodynamic heating and radiant heating. The aircraft is required to be equipped with a heat protection system. The heat protection material of the heat protection system requires aerodynamic heat experiment on the ground to assess its heat protection Performance, aerodynamic thermal experiments are generally carried out in plasma arc wind tunnels, and heaters are widely used as heating equipment. [0003] With the development of aerodynamic thermal ground simulation technology, various types of arc heaters have been developed and applied to gas Dynamic thermal ground simulation experiment. Due to the limitation of structure and operation mode, all kinds of arc heate...

Claims

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Application Information

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IPC IPC(8): H05H1/32H05B7/18H05H1/28H05H1/26
Inventor 李锋袁国伍陈连忠杨国铭
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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